21323107003000 has 128 divisors (see below), whose sum is σ = 54580403404800. Its totient is φ = 7732727952000.

The previous prime is 21323107002961. The next prime is 21323107003043. The reversal of 21323107003000 is 30070132312.

It is a happy number.

It is a super-2 number, since 2×21323107003000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1396041 + ... + 6677959.

It is an arithmetic number, because the mean of its divisors is an integer number (426409401600).

Almost surely, 2^{21323107003000} is an apocalyptic number.

21323107003000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21323107003000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27290201702400).

21323107003000 is an abundant number, since it is smaller than the sum of its proper divisors (33257296401800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21323107003000 is a wasteful number, since it uses less digits than its factorization.

21323107003000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282318 (or 5282304 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

Adding to 21323107003000 its reverse (30070132312), we get a palindrome (21353177135312).

The spelling of 21323107003000 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred seven million, three thousand".